Georg wilhelm yoeltzkow



(No Model.)

G. W. VOELTZKOW: FOLDING STAND, &c.

`No. 509,005. Patented Nov.- 21, 1893.

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construction hereinafter UNITED STATES- PATENTv OFFICE.

' GEORG WILHELM vOELTzKOw, OE BERLIN, GERMANY.

FOLDING STAND, sto.

SPECIFICATION forming part of Letters Patent No. 5o9,oo5,da.ted November :21,1893.

Application filed 'December 19.1891. serial nu. 415.598. cio man.) retained in Germany November 11,1ss5 ',N0. 33,584, and

. in France November 23, 1891, No. 217,613. Y

To a/ZZ whom it may concern,.-

Be it known that I, GEORG WILHELM VOELTZKOW, of Berlin, in the Kingdom of Prussia and Germanv Empire, have invented a new and useful Portable and Folding Stand or Support, (forwhichI have obtained a patent in Germany, No., 33,584, dated November` 11,l 1885, and in France, No. 217,613, dated November 23, 1891,) of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an improved portable and folding stand or support adapted for commercial and domestic purposes and capable of beingfoldedinto a very small compass for traveling or for storing, for which reason and because of its lightness, it is very suitable for artists, surveyors, photographers and others.

My invention consists in features of novel described and claimed.

The accompanying drawings illustrate Yin What manner my invention may be carried into effect, and will be referred to hereinafter.

In each of the figures similar parts are in-Y dicated by similar letters of reference.

` The arrangements and methods of construction illustrated by the drawings are of the most simple character, but it will be understood that by the addition of suitable ernav mental devices and additions a highly artistic or luxurious result may be obtained if desired.

Figure I represents an elevation of the stand or supportwhen opened out; Fig. II

a plan of the open-stand; Fig. III an elevation of the stand in the closed condition; Fig. IV a transverse section along the line A-B Fig. III; Fig. Va partial section through the details represented by Fig. IV along the line C-D; Fig. VI a plan of the slide; Fig. VII avertical section of the slide; Figs. VIII, IX and X a modified construction of the arrangement shown by Figs. I, II, and. III; Fig. XI a horizontal section through the line A-B I Fig. X; Fig. XII anelevation of part of one of the legs of the support or stand illustrated by Fig. X; Figs. XIII and XIV a pla-n and section respectively of a modified form of the slide shown by Figs. VI and VII.

of the balls, spikes, cross-pieces .or feet.

In the drawings, the stands Orsupports are shown as having three legs only, butif desired, a larger number may be employed with equally satisfactory results. Each of the rodshaped legs a, b c are straight and may have balls a b c at their lower ends, or instead At about two-thirds of the height of the'legs they are provided with radial pivots ol e f which are fitted thereon perpendicular to the yaxes of the legs.i A ringgforrnedof two half rings of semi circular cross section, stamped out of 'suitable sheet metal, secured together by the rivets p, has three holes g formed in its inner diameter for the reception of the pivots d ef, the holes being large enough to allow the pivots toiit loosely. This ring is arranged around the carrying legs a b c with their pivots in the holes, as indicated by Fig. IV. l. The inner diameter of the ring g is somewhat more than twice the diameter of one of the legs, so that it does not tightly embrace or inclose the legs but allows them a certain amount ot' play. Above the ring g on 'the legs, there is arranged a slide m capable of being moved up and down on the legs. This slide is hemispherical in shape and is provided with the holes a b cin its crown the diameter of each of which is proportionate to that of each of the legs, but it is desirable that they should tit upon the legs with a small amount of/ grip so that they shall be moved up and down only by a slight effort, or with alittle friction. The movement of this slide upward or downward upon the legs effects the adjustment of the legs and secures them either in the Open position (Fig. I) or in the closed position (Fig. IIIL) It the slide is moved into its highest position as shown in Fig. III the legs will have been caused to move upon their pivots d c f until they have been gathered almost into parallel positions as indicated by the figure and in this posit-ionthe apparatus is adapted to be stored or carried from place to place. If on the contrary, the

slide is moved toward the ring g in which the legs are pivoted, this movement causes the legs to assume inclined positions as shown in Fig. I, and in this position they are ready for use. v

The angle of inclination of the legs in their IOO by means of the internal stiffening ring orl collar n, Fig. XIV. Y

Figs. VIII to XII inclusive represent a modified form of construction of the device for connecting and pivoting the legs. A prismatic or wedge-like piece d carries the pivots ik Z which are firmly secured to it. These pivots pass through holes suitably formed in the legs a b c, the holes beinga little larger than the diameters of the pivots, and at theirl outer ends they are slightly countersunk so as to allow suflicient play for the riveted heads t" 7c Z of the pivots c' 7a Z. The action of this modified arrangementis precisely the same as that hereinbefore described for the apparatus represented by Figs. I, Il andAIII. The upper ends of the legs may be provided with screw hooks, bayonet connections or other suitable devices to suit the purpose for which they are intended, these fittings serving for connecting the stand to lthe object which is intended to be supported by it, such for example as a telescope, a camera, a seat, a table, or signaling apparatus.

The legs instead of being rod-like as illustrated, may be formed of strips, tubes, angle or T-pieces, of wood, metal or other suitable material and of any desired and convenient section and shape.

The ring g and the slide m also may be constructed of any desirable and suitable 'material and may have any convenient shape other than that described. The alternative methods of connecting and `pivoting the legs which are herein described, it will be obvious, do not exhaust the modification, and it is desired to be understood that they may be replaced by other modifications which will act in a similar manner.

What I claim, and desire to secure by Letters Patent of the United States, is

`l. The combination with the straight legs having radial pivots between their ends; of the hemispherical slide m adaptedl to slide on the legs above the pivots, having'holes in itsl crown, the diameter of each of which is proportionate to that of each of the legs; the legs being opened and closed by moving the slide on the legs between their upper ends and the pivots; substantially as described.

2. The combi-nation of the straight legs, the ring g consisting of two half rings of a semi-circularA cross section having pivot-holes g, rivets p by which the half 'rings are secured together, the radial pivots d, @,fsecured to the legs and fitting loosely in the holes, and the hemispherical slide m adapted to slide on lthe legs above the ring, having holes in its crown, the diameter of each of which is `proportionate to that of each of the-legs, the legs being opened and closed by moving the slide on the legs between their upper ends and the ring; substantially as described. g

In witness whereof I have hereunto set my hand in presence of two witnesses.

GEORG WILHELM VOELTZKOW. 

